Enzymatic activities of potato crop soils subjected to conventional management and grassland soils

Avellaneda-Torres, Lizeth Manuela; Melgarejo, Luz Marina; Narváez‐Cuenca, Carlos‐Eduardo; Sánchez, Javier Enrique Vélez

doi:10.4067/s0718-95162013005000025

Cited by 12 publications

(10 citation statements)

References 31 publications

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“…The significant correlation between enzymatic activity and C/N ratio found in this study confirms how important the quality of organic matter, supplied among others by plants, is. The high soil enzymatic activity in the organic system was related to a quite high content of organic matter with a good decomposition rate (among others, catch crop biomass was ploughed under), which is confirmed by the low value C/N ratio [42]. Catch crops having a narrow C/N ratio cause abrupt changes in soil physical, chemical, and biological properties [43] and accelerated soil mineralization.…”

Section: Discussionmentioning

confidence: 76%

Enzymatic Activity of Loess Soil in Organic and Conventional Farming Systems

et al. 2020

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This study was conducted over the period 2017–2019 in Czesławice (central Lublin region, Poland). The aim of the present study was to compare chemical soil quality parameters (soil pH, available P and K, organic carbon, and total nitrogen content) and soil enzymatic activity (dehydrogenase, acid phosphatase, alkaline phosphatase, urease, protease) in organic and conventional farming systems. The experimental design included two crop rotations (organic and conventional) in which identical plant species were grown: sugar beet-spring barley-red clover-winter wheat-oats. The loess soil on which the experiment was conducted was characterized by the grain size distribution of silt loam, and this soil was categorized as good wheat soil complex (soil class II). The experiment was set up as a split-plot design in triplicate in plots with an area of 40 m2. Soil sampling was carried out using a soil auger within an area of 0.20 m2 (from the 0 to 20 cm layer) in each plot during the autumn period. Over the 3-year study period, it was found that the organic system contributed to an increased soil content of organic carbon and total nitrogen. Moreover, a significantly higher soil pH value and a favorable narrow C/N ratio were found under the organic system (regardless of the crop species). Under the conventional system, in turn, a higher soil phosphorus and potassium content was observed. Enzymatic tests of the soil in the five-field crop rotation proved significantly higher activity of all the enzymes studied (in particular that of dehydrogenase, protease, and urease) in the organic system relative to the conventional one, regardless of the crop plant. Among the plants grown in crop rotation, sugar beet, and red clover had the most beneficial effect on the activity of the soil enzymes, followed by oats (especially under the organic system). The activity of the studied enzymes in the organic system was positively correlated (statistically significantly) with favorable soil pH, a higher content of organic C, and total N, and C/N ratio.

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Section: Discussionmentioning

confidence: 76%

Enzymatic Activity of Loess Soil in Organic and Conventional Farming Systems

et al. 2020

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“…Catch crop biomass (ploughed in or left as mulch) is, among others, an important source of soil organic matter that enhances soil enzyme activities [2,20,21,44]. Other authors [9,[45][46][47][48] also note that high soil enzymatic activity is conditional on the absence of ploughing and on soil coverage by plants throughout the entire growing season (or its major part). Catch crops improve soil moisture and thermal conditions, while these, in turn, determine soil enzymatic activity [49].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Catch Crops and Tillage Systems on Selected Physical Properties and Enzymatic Activity of Loess Soil in a Spring Wheat Monoculture

2020

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This study was aimed at comparing physical soil quality parameters and soil enzymatic activity in a three-year spring wheat monoculture affected by the incorporation of biomass of selected catch crops into the soil using two systems of tillage (conventional plough tillage and conservation tillage). We tested the suitability of the following catch crop plants: white mustard, lacy phacelia, and mixed legumes (faba bean + spring vetch) and compared these to the control treatment. This research was carried out in the period 2014–2016 in Czesławice (central Lublin region, Poland). Catch crops promoted improved soil structure, soil particle-size distribution, soil bulk density, and soil moisture content. Tillage systems had a smaller impact on the soil physical parameters. Plough tillage contributed to improved soil moisture content in a deeper layer (15–20 cm). On the other hand, the above-mentioned tillage system influenced adversely soil compaction and bulk density. Catch crops caused an improvement in the soil particle size distribution, resulting in a higher percentage of the finer soil fractions. Moreover, the catch crops positively affected soil bulk density and soil compaction. The study has proven that enzymatic tests are good indicators to discriminate between soil sites under study in dependence on the catch crop and tillage system. Conservation tillage significantly stimulated the activities of the studied enzymes, especially in the topsoil layers. A particularly wide range of dehydrogenase and urease activity was obtained in the soil sown with the white mustard catch crop. The other catch crops (lacy phacelia and faba bean + spring vetch) also stimulated enzymatic activity. The obtained results show the positive role of catch crops and conservation tillage in bringing about positive changes occurring in the soil environment.

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“…The correlations of enzyme activity with soil properties tended to change with incubation time, in most cases without statistical significance (p > 0.05, data not shown), with the exception of MUBglucosidase activity whose correlation with OM became significant after 8 h of extraction (r = 0.5660; p < 0.08) and the significant (p < 0.05) correlation of acetate-glucosidase activity with OM, that is, in general, kept with time. Some other researchers have found correlations between enzyme activity (MUB) and soil pH and/or clay content (Avellaneda-Torres et al, 2013;Ma et al, 2010). In spite of the significant correlation between MUB and maleate buffers, no significant relationship (p < 0.05) was obtained for the former and any soil property.…”

Section: Results and Discussion 31 Evaluation Of Different Buffers Amentioning

confidence: 83%

Efficiency of three buffers for extracting β-glucosidase enzyme in different soil orders: Evaluating the role of soil organic matter

Gutiérrez¹,

Blu²,

Molina-Roco³

et al. 2017

Sci.agropec

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The objective of this research was to evaluate extraction methods for β-glucosidases comparing three buffer solutions (MUB, acetate, and maleate) at different incubation times (0.5 h to 10 h) and in three different soil orders (Mollisols, Andisols and Ultisols). Seven acidic soils were evaluated, showing differences in pH, OM, and clay contents. To evaluate the effect of OM as enzymes source, one soil of each order was treated to partially remove its OM and then the enzyme assay was performed. When using MUB and maleate buffers the highest (32 and 31 µg-pNP g-soil -1 h -1 in average, respectively) were found, and the latter was significantly (p < 0.050) correlated with the soil clay content. The activity obtained with acetate buffer was much lower (38.2 µg-pNP g-soil -1 h -1 in average). The use of MUB buffer with 1 h of incubation is suggested as extraction method, showing good reproducibility and allowing to express higher enzyme potential for soil comparisons. For the Andisol and Ultisol, the enzyme activity significantly decreased with the OM removal (%) indicating that OM is the major source of the measured β-glucosidase activity, while a different trend was observed for the Mollisol, in which the mineral fraction (mainly 2:1 type clay) appears to be involved in the increased enzyme activity displayed after the initial OM removal.

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Enzymatic activities of potato crop soils subjected to conventional management and grassland soils

Cited by 12 publications

References 31 publications

Enzymatic Activity of Loess Soil in Organic and Conventional Farming Systems

Enzymatic Activity of Loess Soil in Organic and Conventional Farming Systems

The Effects of Catch Crops and Tillage Systems on Selected Physical Properties and Enzymatic Activity of Loess Soil in a Spring Wheat Monoculture

Efficiency of three buffers for extracting β-glucosidase enzyme in different soil orders: Evaluating the role of soil organic matter

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